Proxmox backup issue

[zystem]

I have proxmox cluster with special backup nfs storage.
This nfs storage uses only for backups not for iso, images or else.
Then backup nfs storage broken backups started but cannot end. So vms cant exit locked mode.
As result unworking backup storage do not made backup system unworking as expected but made cluster unworking.

As soluion I propose make check that storage writable before run backup.

 

[zystem]

As exellent solution add parameter max backup lifetime and kill backup after this time and unlock vms.